Air conditioners are a necessity when the summer heat is in full force. However, ice can develop on the machine, even on the hottest days. While this may come as a surprise, there are a few issues that may be causing the frosty buildup. Below are some common reasons and when to call an HVAC contractor for help.

Why Is Your AC Freezing?

1. Airflow Troubles

Air conditioners need air to move freely to work well. When airflow is blocked, warm air can't roll over the coils, and moisture will settle and turn to ice. To avoid the issue in the future, check that the filters are clean and not clogged with dust and dirt. Next, check that all vents in your home are open and uncovered, and furniture, toys, or other items aren't blocking them.

2. Grimy Coils

Dirty evaporator coils can't absorb condensation from the air passing over them fast enough. All of the moisture will then freeze, leading to a buildup of ice. Cleaning the coils twice a year will prevent grime from accumulating and interfering with the absorption process.

3. Refrigerant Levels

Refrigerant is needed to maintain comfortable temperatures, but if there are problems or leaks in the line, you may end up with a frozen unit. As pressure drops, the refrigerant will expand and get too cold, leading to frost. Call an HVAC contractor when you suspect an issue with refrigerant, as this substance is toxic and must be handled properly.

4. Compromised Blower Fan

The blower fan pushes warm air out and moves cool air into your living space. If the fan is damaged or broken, this air won't run correctly through the unit. Condensation can then accumulate on coils, and if it's not draining or evaporating as warm air moves over it, it'll freeze. A chain reaction can later occur where the refrigerant line freezes, too.

5. Temperature Drop

Every so often, the temperature outside at night drops during the summer. If your AC continues to run when it's too cool, you may see ice forming in areas where condensation is accumulating. The best solution is to upgrade to a programmable thermostat that'll automatically turn off the unit when it detects low outside temperatures.

If you need an HVAC contractor in Connecticut, call Thomaston Oil.  Since 1986, this oil company has been a reliable resource for heating and cooling needs. Fully licensed and with more than 30 years of experience, their technicians always ensure every job is completed correctly and all their customers are satisfied. Call (860) 283-4878 for an estimate or emergency services, and visit them online for a look at their service plans.